Steven Naismith does not expect Rangers team-mate Kris Boyd to be influenced by his failed move to Birmingham.
Boyd could not agree personal terms at St Andrews but speculation continues to suggest he is set to leave the SPL in January, with Wigan rumoured as a destination.
But Boyd - who has scored 20 goals in all competitions this season - is still expected to play a part in Tuesday night's Scottish Cup tie at St Johnstone as Rangers boss Walter Smith insists he has no problem selecting the striker in his squad.
And fellow forward Naismith, who also played with Boyd at Kilmarnock, is confident that his colleague will be as deadly as ever if selected.
"He's had it all before, even when he was at Kilmarnock," said Naismith. "I think Cardiff came in for him, and over that period he still scored a load of goals.
"I know he won't be letting it affect him that much. He has proved plenty of points this season.
"He had a lot of doubters but he's shown he can stand up to criticism and shown what he is really about.
"After training, he's been in the gym most days of the week and he's been very dedicated."
And Naismith also believes that Boyd's prolific form this term is because the attacker received limited opportunities in the last campaign.
"At Rangers you need to be at the top of your game, and I think Boydy's attitude is tremendous at the moment," added Naismith.
"He didn't play as much as he would have liked last season, and that's maybe what sparked him off. As we have all seen, he has proved his doubters wrong."